    package com.zy.common.utils;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAccessor;
import java.util.Date;

/**
 * 时间工具类
 *
 * @author zy
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {

    public static final String YYYY = "yyyy";

    public static final String YYYY_MM = "yyyy-MM";

    public static final String YYYY_MM_DD = "yyyy-MM-dd";

    public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static final String[] PARSE_PATTERNS = {
        "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
        "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
        "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static String dateTime(LocalDateTime date) {
        return LocalDateTime.now().format(DateTimeFormatter.ofPattern(YYYY_MM_DD));

    }


    public static String localDate(TemporalAccessor date) {
        return DateTimeFormatter.ofPattern(YYYY_MM_DD).format(date);
    }

    public static String localDateTime(TemporalAccessor date) {
        return DateTimeFormatter.ofPattern(YYYY_MM_DD_HH_MM_SS).format(date);
    }

    public static String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), PARSE_PATTERNS);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算相差天数
     */
    public static int differentDaysByMillisecond(Date date1, Date date2) {
        return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 获取两个时间差的 年月日时分秒
     *
     * @return 1年3日2时35分56秒
     */
    public static String getDateStr(LocalDateTime startWorkDate, LocalDateTime endWorkDate) {


        Period p = Period.between(startWorkDate.toLocalDate(), endWorkDate.toLocalDate());
        StringBuffer stringBuffer = new StringBuffer("");

        if (p.getYears() != 0) {
            stringBuffer.append(p.getYears()).append("岁");
        }
        int months = p.getMonths();
        int days = p.getDays();
        if (months != 0) {
            stringBuffer.append(months).append("月");
        }
        if (days != 0) {
            stringBuffer.append(days).append("天");
        }
        return stringBuffer.toString();
    }


    /**
     * 增加 LocalDateTime ==> Date
     */
    public static Date toDate(LocalDateTime temporalAccessor) {
        ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 增加 LocalDate ==> Date
     */
    public static Date toDate(LocalDate temporalAccessor) {
        LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
        ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    public static LocalDate toLocalDate(Date date) {
        return LocalDate.ofInstant(date.toInstant(), ZoneId.systemDefault());
    }

    public static LocalDate toLocalDate(String date) {
        return LocalDate.from(DateTimeFormatter.ofPattern(YYYY_MM_DD).parse(date));
    }

    public static LocalDateTime toLocalDateTime(String date) {
        return LocalDateTime.from(DateTimeFormatter.ofPattern(YYYY_MM_DD_HH_MM_SS).parse(date));
    }

    /**
     * epochMilli毫秒转LocalDateTime
     *
     * @param epochMilli
     * @return
     */
    public static LocalDateTime toLocalDateTime(long epochMilli) {
        return LocalDateTime.ofInstant(Instant.ofEpochMilli(epochMilli), ZoneId.systemDefault());
    }

    public static LocalDateTime toLocalDateTime(Date date) {
        return LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
    }

    public static Integer getDay(LocalDateTime min, LocalDateTime end) {

        Duration duration = Duration.between(min, end);
        long days = duration.toDays(); //相差的天数
        return Math.toIntExact(days);
    }

    public static Integer getDay(LocalDate min, LocalDate end) {
        Duration duration = Duration.between(LocalDateTime.of(min.getYear(),min.getMonthValue(),min.getDayOfMonth(),0,0,0), LocalDateTime.of(end.getYear(),end.getMonthValue(),end.getDayOfMonth(),23,59,59));
        long days = duration.toDays(); //相差的天数
        return Math.toIntExact(days);
    }


    public static void main(String[] args) {
        Integer day = getDay(LocalDateTime.now().plusDays(896), LocalDateTime.now());

        System.out.println(day);
    }

}
